Ўзбекистон республикаси ахборот технологиялари ва коммуникацияларини ривожлантириш вазирлиги

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5.2. Асбобнинг ўлчаш хатолиги...________________________________________________

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5.3. Ўлчаш диапазони..._________________________________________________________

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5.4. Хусусий энергия сарфи...____________________________________________________

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6. М аҳсулот хақидаги маълумотларни стандартлаштириш ва кодлаш...

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7. Мувофиқлик сертификатини расмийлаштириш ва бериш тартиби? ____________

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8. Халқаро бирликлар тизими бирликларини ўнли каррали ва улушли бирликларининг номлари ва белгиларини ҳосил қилиш қоидалари?...

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9. Халқаро бирликлар тизими...______________________________________________

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10. Ўзбекисторн Республикаси сертификатлаштириш миллий тизиминингташкилий тузилмаси:?

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II. Амалий топшириқ
Мисол: Бир нечта ўлчов натижаларини қайта ишлаш
Ишнинг мақсади: экспрементал тарзда олинган маълумотларнинг статистик таҳлилини ўтказиш, қидирув усулларини ўрганиш ва ўлчов натижаларининг умумий сонидан хатоларни бартараф қилиш кўникмаларига эга бўлиш.
Ўлчовларнинг қўпол хатоларини қидирш мезонлари тўғрисида маълумот

Тизимли қўпол хатоларни бартараф этиш бу - экспериментал натижаларни режалаштириш, тайёрлаш, ўтказиш ва қайта ишлашдаги асосий вазифалардан биридир.

Қўпол хатоларни аниқлаш учун ўлчаш натижаларининг статистик қаторини бир нечта усуллар маълум. Ўлчов натижаларининг статистик қаторидан қўпол хатоларни олиб ташлашнинг энг оддий усули бу - учта сигма қоидаси: тасодифий ўзгарувчиларнинг ўртача қийматдан тарқалиши 3σ дан ошмаслиги керак:

бу ерда – статистик қаторнинг максимал ёки минимал қиймати; статистик қаторининг арифметик ўртача қиймати (математик кутиш); – ўртача квадратик оғиш.

Ишончлилигини нуқтаи назаридан ишонч интервалларидан фойдаланишга асосланган усуллар афзал кўрилади.

Оддий тақсимот қонуни билан тавсифланган кичик намунадаги ўлчаш натижаларининг статистик қатори (ўлчаш натижаларининг сони 20 дан ошмайди) бўлсин, агар қўпол хатолар мавжуд бўлса, уларнинг кўриниши β1, β2 аниқланади.


бу ерда: , ўлчовлардан энг катта ва энг кичик қийматлардир.
2.2 - жадвалда ўлчаш натижаларининг статистик тарқалиши натижасида вужудга келиш эхтимолига боғлиқ холда қўпол хатоларнинг пайдо бўлиши мезонларининг максимал қийматлари берилган.

Агар бўлса унда қийматни ўлчов натижаларининг статистик қаторидан қўпол хато сифатида чиқариб ташлаш керак.

Агар бўлса унда а мин қийматини ўлчов натижаларининг статистик қаторидан қўпол хато сифатида чиқариб ташлаш керак. Истисно қилинганидан кейин ўлчовлар учун , , , миқдори яна аниқланади.

2.2 – жадвал

мезонининг максимал қийматлари

n					n
	0,90	0,95	0,99	0,90			0,95	0,99
3	1,41	1,41	1,41	15		2,33		2,49	2,80
4	1,64	1,69	1,72	16		2,35		2,52	2,84
5	1,79	1,87	1,96	17		2,38		2,55	2,87
6	1,89	2,00	2,13	18		2,40		2,58	2,90
7	1,97	2,09	2,26	19		2,43		2,60	2,93
8	2,04	2,17	2,37	20		2,45		2,62	2,96
9	2,10	2,24	2,46	25		2,54		2,72	3,07
10	2,15	2,29	2,54	30		2,61		2,79	3,16
11	2,19	2,34	2,61	35		2,67		2,85	3,22
12	2,23	2,39	2,66	40		2,72		2,90	3,28
13	2,26	2,43	2,71	45		2,76		2,95	3,33
14	2,30	2,46	2,76	50		2,80		2,99	3,37